Not a problem. Mine is nothing. You should have seen frogman's collection. :wink:
Yes, the HK45 safety + decocker is like the USP/USPc. I believe the decocker on the P30 series was designed to be operated with your support thumb.
It's also pretty easy to use your strong hand thumb (assuming one is right handed) to decock the gun as typically the thumb will ride that spot on the slide if the "thumb-capping" method is used during re-holstering.
Omega, the HK45 comes in different variants as well, the Variants are numbered differently than the P30, but there's more than just the DA/SA with Safety/Decocker
The P30 features a "hooked" trigger guard while the Hk45 does not. The HK45 has a slightly better reset than the P30, at least as far as DA/SA is concerned, not sure when comparing a Hk45 LEM to a P30 LEM
The P30S has metal control levers, the Hk45 has plastic...excuse me....polymer control levers.
Of course there's always the difference in capacity the P30 holds 15+1 while the Hk45 holds 10+1 to be considered as well.
The P30 features a "captured" slide release/stop lever assy. while the HK45 does not...for some reason I find myself preferring the Hk45's lever assy. but over time that may change.
Both are great guns, I love my Hk45, I'm still warming up to the P30S.
Also, don't forget to look at the Hk45C if you are looking at these two for carry. While the HK45 is only slightly larger than a P30, it's still a pretty good sized gun.